javascript - 为什么我无法在我的 Android 应用程序中使用 Cordova 2.7.0 触发 navigator.camera.getPicture？

Question

我正在开发适用于 Android 的 Cordova 应用程序，该应用程序必须从设备上传图像。测试是在装有 Android 4.0.4 的摩托罗拉 Xoom 平板电脑上进行的。
Cordova 版本为 2.7.0。

应用程序打开并正确调用 ondeviceready。

用户按下按钮并触发以下功能:

capture: function(sourceType) {
  navigator.camera.getPicture(this.onCaptureSuccess, this.onCaptureFail, {
    quality: 20
    ,targetWidth: 100
    ,targetHeight: 100
    ,destinationType: Camera.DestinationType.FILE_URI 
    ,sourceType: Camera.PictureSourceType.PHOTOLIBRARY
    ,correctOrientation: false
  });
}

一旦触发该功能，就会显示一个菜单，其中有 4 个选项可供选择文件的来源(ASTRO 文件管理器、ES 文件资源管理器、文件和图库)，并且以下消息将添加到 Logcat:

05-11 13:30:51.400: D/DroidGap(11102): Paused the application!
05-11 13:30:51.400: D/CordovaWebView(11102): Handle the pause

我可以选择四个中的任何一个，LogCat 显示以下消息:

05-11 13:33:57.960: D/DroidGap(11409): onDestroy()
05-11 13:33:57.960: D/CordovaWebView(11409): >>> loadUrl(javascript:try{cordova.require('cordova/channel').onDestroy.fire();}catch(e){console.log('exception firing destroy event from native');};)
05-11 13:33:57.960: D/PluginManager(11409): init()
05-11 13:33:57.970: D/CordovaWebView(11409): >>> loadUrlNow()
05-11 13:33:58.120: D/OpenGLRenderer(11409): Flushing caches (mode 0)
05-11 13:33:58.350: D/OpenGLRenderer(11409): Flushing caches (mode 1)

一旦我选择了我要上传的图像，应用程序就会显示一条消息“不幸的是，该过程.. 已停止。”并显示以下 LogCat 消息:

05-11 13:40:06.750: D/DroidGap(11886): DroidGap.onCreate()
05-11 13:40:06.770: D/CordovaWebView(11886): CordovaWebView is running on device made by: Motorola
05-11 13:40:06.770: D/JsMessageQueue(11886): Set native->JS mode to 2
05-11 13:40:06.770: D/DroidGap(11886): DroidGap.init()
05-11 13:40:06.770: D/CordovaWebView(11886): >>> loadUrl(file:///android_asset/www/index.html)
05-11 13:40:06.770: D/PluginManager(11886): init()
05-11 13:40:06.780: D/CordovaWebView(11886): >>> loadUrlNow()
05-11 13:40:06.780: D/DroidGap(11886): Incoming Result
05-11 13:40:06.780: D/DroidGap(11886): Request code = 18
05-11 13:40:06.780: D/DroidGap(11886): We have a callback to send this result to
05-11 13:40:06.780: D/AndroidRuntime(11886): Shutting down VM
05-11 13:40:06.780: W/dalvikvm(11886): threadid=1: thread exiting with uncaught exception (group=0x40a2f1f8)
05-11 13:40:06.800: E/AndroidRuntime(11886): FATAL EXCEPTION: main
05-11 13:40:06.800: E/AndroidRuntime(11886): java.lang.RuntimeException: Unable to resume activity {com.ubihealth/com.ubihealth.UbiHealth}: java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=18, result=-1, data=Intent { dat=content://media/external/images/media/7468 }} to activity {com.ubihealth/com.ubihealth.UbiHealth}: java.lang.NullPointerException
05-11 13:40:06.800: E/AndroidRuntime(11886):    at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2466)
05-11 13:40:06.800: E/AndroidRuntime(11886):    at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:2494)
05-11 13:40:06.800: E/AndroidRuntime(11886):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2008)
05-11 13:40:06.800: E/AndroidRuntime(11886):    at android.app.ActivityThread.access$600(ActivityThread.java:123)
05-11 13:40:06.800: E/AndroidRuntime(11886):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1169)
05-11 13:40:06.800: E/AndroidRuntime(11886):    at android.os.Handler.dispatchMessage(Handler.java:99)
05-11 13:40:06.800: E/AndroidRuntime(11886):    at android.os.Looper.loop(Looper.java:137)
05-11 13:40:06.800: E/AndroidRuntime(11886):    at android.app.ActivityThread.main(ActivityThread.java:4446)
05-11 13:40:06.800: E/AndroidRuntime(11886):    at java.lang.reflect.Method.invokeNative(Native Method)
05-11 13:40:06.800: E/AndroidRuntime(11886):    at java.lang.reflect.Method.invoke(Method.java:511)
05-11 13:40:06.800: E/AndroidRuntime(11886):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
05-11 13:40:06.800: E/AndroidRuntime(11886):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
05-11 13:40:06.800: E/AndroidRuntime(11886):    at dalvik.system.NativeStart.main(Native Method)
05-11 13:40:06.800: E/AndroidRuntime(11886): Caused by: java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=18, result=-1, data=Intent { dat=content://media/external/images/media/7468 }} to activity {com.ubihealth/com.ubihealth.UbiHealth}: java.lang.NullPointerException
05-11 13:40:06.800: E/AndroidRuntime(11886):    at android.app.ActivityThread.deliverResults(ActivityThread.java:3002)
05-11 13:40:06.800: E/AndroidRuntime(11886):    at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2453)
05-11 13:40:06.800: E/AndroidRuntime(11886):    ... 12 more
05-11 13:40:06.800: E/AndroidRuntime(11886): Caused by: java.lang.NullPointerException
05-11 13:40:06.800: E/AndroidRuntime(11886):    at org.apache.cordova.DroidGap.onActivityResult(DroidGap.java:858)
05-11 13:40:06.800: E/AndroidRuntime(11886):    at android.app.Activity.dispatchActivityResult(Activity.java:4649)
05-11 13:40:06.800: E/AndroidRuntime(11886):    at android.app.ActivityThread.deliverResults(ActivityThread.java:2998)
05-11 13:40:06.800: E/AndroidRuntime(11886):    ... 13 more
05-11 13:40:07.040: D/chromium(11886): Unknown chromium error: -6
05-11 13:40:07.070: D/CordovaNetworkManager(11886): Connection Type: none

知道我的错误是什么吗？

更新:我已经用 Cordova 2.6.0 更新了我的项目并尝试了上面的代码，但没有成功。现在我用 Cordova 2.7.0 创建了一个新项目，并从旧项目中复制了 Cordova 代码，它运行良好。

Answer 1

我在一些设备上使用 Cordova 2.7 测试了这段代码并得到了以下结果:

Nexus 7 (4.2)                     no problems
HTC Sensation (2.3.4)             no problems
HTC Evo 4g (2.2)                  no problems
Samsung Galaxy Tab 7.0 (4.0.4)    Had the below Java error but JS seems to get the image

(4.0.2 - 05-15 15:16:53.895: E/ActivityThread(3520): Activity com.android.internal.app.ChooserActivity has leaked IntentReceiver com.android.internal.app.ResolverActivity$1@4131a248 that was originally registered here. Are you missing a call to unregisterReceiver()?

将在我的同事吃完午饭回来后在 Xoom 平板电脑上进行测试。